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Krabia minuta
Taxonomy
Krabia minuta was named by Chaimanee et al. (2013). Its type specimen is MPFT-05-1, a maxilla (maxillary fragment preserving the crowns of left P4 – M2 (M3 represented only by small root frag- ment) and right M1 – M2), and it is a 3D body fossil. Its type locality is Bang Mark Lignite Mine, which is in an Eocene fluvial-lacustrine lignite in Thailand. It is the type species of Krabia.
Synonymy list
| Year | Name and author |
|---|---|
| 2013 | Krabia minuta Chaimanee et al. figs. Figure 1 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Krabia minuta Chaimanee et al. 2013
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Chaimanee et al. 2013 | Small amphipithecid anthropoid primates, similar in size to Phenacopithecus, much smaller than other Eocene amphipithecid primates. Characterized by subtriangular upper molars having rounded corners, upper molars unwaisted, bunodont, low and vertical cusps, closed trigon, smooth enamel, absence of buccal cingulum, hypocone, peri- cone and conules, very strong and complete lingual cingulum, weak parastyle and metastyle, and M2 buccal wall oblique with paracone more expanded buccally than metacone.
Differs from other amphipithecids (Siamopithecus, Pon- daungia, Ganlea, Myanmarpithecus and Bugtipithecus) by the absence of buccal cingulum, hypocone, pericone and conules, presence of strong and complete lingual cingulum, smooth enamel, closed trigon, and weak parastyle and metastyle. Differs from eosimiiforms (Eosimias, Phenacopithecus, Bahi- nia, Phileosimias and Afrasia) by its broad and unwaisted upper molars, low cusp relief, absence of buccal cingulum and conules, more buccal position of its paracone and meta- cone, weak parastyle and metastyle, strong and complete lingual cingulum and smaller trigon. Differs from omomyids and tarsiids by less triangular shape of molar, no buccal cingulum, and no hypocone and conules. Differs from sivaladapids (Guangxilemur and Hoangho- nius) by the absence of buccal cingulum, buccal shearing crests, mesostyle, hypocone, pericone and conules, weak parastyle and closed trigon. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Nowak 1999, Lillegraven 1979, Ji et al. 2002 | |||||
Age range: Late/Upper Eocene or 37.20000 to 33.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eocene | Thailand | Krabia minutua (type locality: 13127) |